INVESTIGATION WATCHCheney may be called upon to testify in Libby case. Wow. What happens once this guy gets put on the stand under oath (assuming he agrees to do it)?http://www.nytimes.com/2006/05/25/washington/25cheney.htmlhttp://www.washingtonmonthly.com/archives/individual/2006_05/008890.phphttp://talkleft.com/new_archives/014938.htmlhttp://www.warandpiece.com/blogdirs/004255.html[NY Daily